SB2016050225 - Improper access control in Linux kernel fs
Published: May 2, 2016
Security Bulletin ID
SB2016050225
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper access control (CVE-ID: CVE-2014-9717)
The vulnerability allows a local user to read and manipulate data.
The vulnerability exists due to improper access control error within the mntput_no_expire(), umount_tree() and __detach_mounts() functions in fs/namespace.c. A local user can read and manipulate data.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce07d891a0891d3c0d0c2d73d577490486b809e1
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00056.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2
- http://www.openwall.com/lists/oss-security/2015/04/17/4
- http://www.securityfocus.com/bid/74226
- http://www.spinics.net/lists/linux-containers/msg30786.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1226751
- https://github.com/torvalds/linux/commit/ce07d891a0891d3c0d0c2d73d577490486b809e1
- https://groups.google.com/forum/message/raw?msg=linux.kernel/HnegnbXk0Vs/RClojwJzAFEJ